Motorcycle frame



FIG. 1 is an isometric projection of a top side view of a motorcycle frame showing our new design.

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevational front view thereof;

FIG. 4 is an elevational rear view thereof;

FIG. 5 is an elevational view of a first side thereof;

FIG. 6 is an elevational view of a second side thereof; and,

FIG. 7 is a bottom plan thereof. 

The ornamental design for a motorcycle frame, as shown and described. 